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Electronic speckle pattern interferometry is an interesting alternative to conventional holographic interferometry. It has the added advantage that, since it uses a video-electronic system for detection and processing, measurements can be done in real-time. This paper presents an ESPI system for vibration analysis purposes based on a time-average and subtraction method. It is shown that it is not very sensitive to ambient factors but that it is very suitable for in-field applications.

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Authors: FACCHINI M, JRC Ispra (IT);LUCIA A C, JRC Ispra (IT);ZANETTA P, JRC Ispra (IT)
Bibliographic Reference: Paper presented: 3 Convegno Nazionale 'Strumentazione e metodi di misura elettroottici', Pavia (IT), May 25-27, 1994
Availability: Available from (1) as Paper IT 38320 ORA
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